Moving-picture film.



1 I; TES mammals WALLACE APPLETON marry, or new roan, N. Y., assr'cnoa, BY manor AND, mnsms:

ASSIGNMENTS, r0 enonen w. BEADLE, or NEW YORK, 1v. Y.

' Ho Drawing.

To all whom it may-concern:

'Be it known that I, WALLACE APPLETON BEATTY, a-citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Im rovements in, -Moving-Picture Films; and

do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which .it appertains to make and use the same.-

1 This invention relates to moving picture films, and has for its object toproduce a I ticularly pointed out in the claims.

In order that the invention may be more clearly understood, it is said :In my prior application #702 046, filed June 6, 1912, en-

. titled Artificial gums and process of producing the same, I have disclosed and claimed a new gum and method of making it, which method, when briefly stated, consists in forming a crystalline product from a mixture of acetone and phenol to which is added a small quantity of acid, in order to produce a compound, which I believe to be dioxydiphenyl-dimethyl-methane. In the said appllcation, this compound is then further acted upon by formaldehyde. in order to produce a-further tenacious product constituting the said new gum above mentioned, but the latter is not necessarily used in this invention. This compound dioxy-diphenyldimethyl-methane is'of a crystalline form, and soluble in alcohol, ether, acetone, glacial acetic acid, amyl alcohol, amyl acetate and acetylene tetra-chlorid, and mixtures of these, as Well as many other solvents not necessary to mention. Accordingly, in'making moving picture films, or other photographic films, out of this said com ound and cellulose acetate, I preferably provide a mi-x- 4 say twenty-five parts by weight of the said dioxy-diphenyl-dimethylmethane and seventy-five parts by weight of cellulose acetate. This mixture is then dissolved preferably in acetone to the'proper consistency, and force the solution through ture containing Specification of Letters Patent.

- Application flledlanuary 3, 1913. Serial No. 740,077.-

to those skilled in the art.

' MOVING-PICTURE FILM.-

Patented Nov. 2 1915.

further proceed in the manner well known For example, the photographic films dismethod of makin and following, vol. 2 of closed on page 84 the usualslit employed in making films, and

the publication entitled Nitrp Cellulose 'lndustry, Worden, edition of 1911, may be followed, and the method of making pyroxylin sheets disclosed on page 853 and followmg, ofsaid publication, may be emplo ed for making the moving picture films. ut, of course, any other suitable and well known method may be followed, if desired.

The films when produced by the method above mentioned, or in any other manner, may then be coated with the photographic emulsion, exposed and developed in the usual way, or when it is desired to make the films especially non-inflammable and to impartan extra hard surface thereto, I preferably pass the same, before coating them with an emulsion, through a bath consisting of a thin solution of my novel gum above mentioned, dissolved preferably in alcohol. This said coating serves as an efiicient protection' against sparks or other ignited material, which may come in contact with the surface of the film.

The films, whether coated with the gum or not, will be transparent, and non-lnflammable' in the sense that they will only burn when kept constantly in the flame. coated with the gum, as above mentioned, they will be less liable to be i ited when a spark falls upon one of their at surfaces.

These said films are found to be exceedingly strong and tenacious when compared with the films now in use, they take'the emulsion well, and may be developed in the usual manner.

In order to cause the gum coating to harden quickly, I prefer to make the gum solution acid in reaction by adding a suflicient quantity of acid thereto, whereupon the said gum will 0 into its hard and insoluble condition wlthout the application of But, if

the temperatures mentionedin my said pat out departing from the spirit of my invention, for example, homologues of acetone such as ethyl methyl ketone or di-ethyl ketone may be used, and cresol may be used instead of phenol. 'lherefore, ll do not Wish to be limiteol to the above disclosure except as may be required. by the eleims.

What I claim is 1. A photographic film containing condensation product of e ketone and, :1 phenol in the form of a thin slow burning sheet 2 moving picture film substantially composed of {2, mixture of e cellulose and a condensation product of e ketone and a phenol in the form of e ribbon capable of ellowing light to pass therethrouglii 3. moving picture film in the form 5t transparent ribbon and composed e min ture of cellulose acetate and. e comlensetion 1:1

product oi acetone and phenol.

4:. A moving picture film 'substentielly composed of a mixture of cellulose acetate and u ':ondensotion product of acetone and phenol in the form of a transparent ribbon and coeted With a condensation product of u .ketone, at phenol and an aldehyde.

In testimony whereof, I etlix my ture, in presence of two Witnesses.

WALLACE APPLETON BEA'EITY.

l Vitnesses TV A. fifrrziniisrooiw,

:PAYKKER. 

